I am stuck with this problem for a few days and I really need help,advice, insight, anything...I am using Centos 6.5, Asterisk 11.13.0 and FreePBX 2.5. Through the FreePBX interface I installed one fax free license and I want to test it in order to know should I buy it. My fax components are:

Using the .call file I was able to send faxes without any problems. However I can not receive more than one page of fax.Every time I got the error "The call dropped prematurely". I am not sure why asterisk stops to receive other pages. Here is my log :